The biggest for the social news site? President Barack Obama's surprising Reddit session in August. That one netted nearly 3 million page views on the day of the AMA and continued to garner millions more on subsequent days.

The banter during the 3-hour AMA — in which we learn about Snoop's guilty pleasure for Korean pop music, advice for white college rappers, and backup career choice to be a coach — sparked more than 26,000 comments.

"Snoop is a huge draw and he clearly had fun doing the IAMA — that came across and kept the party going," says Erik Martin, Reddit's general manager. "I hope people see that really spending time, being open and having fun online (not just on Reddit) pays off. If it feels like a boring press junket, you're not doing it right."

Snoop edged out AMAs from Neil DeGrasse Tyson, Louis CK and Ken Jennings to claim the number-two spot on the most-viewed AMAs list.

While Reddit has plenty of scheduled AMAs on tap — Monster, Inc. 3D directer Pete Docter, Epic Meal Time host Harley Morenstein and even astronaut Chris Hadfield to name a few — there is a certain someone Reddit would like to come do an AMA.

"Willie Nelson, we're ready when you are," Martin says.

20 Fascinating Facts We Learned From Reddit in 2012

1. Peanut butter used to come in slices.

Apparently in 2008, peanut butter was sold in slices, similar to Kraft singles.

In the comments, Reddit users reminisced about purple ketchup, Goobers (peanut butter and jelly in one bottle), black water and other failed kids' food marketing.

2. These underwater "crop circles" are the work of someone crafty.

A Japanese underwater photographer discovered geometric patterns in the sand about 80 feet below sea level. The mysterious, 6.5-foot wide shapes had never been documented, so he enlisted help to solve the mystery.

Turns out, they are created by little puffer fish, sculpting away for long hours, lining the grooves of these masterpieces with crushed shells. Why?

3. Koalas have human-like fingerprints.

Besides primates, koalas are one of the few mammals that have fingerprints. In fact, the marsupials' fingerprints are so similar to humans that it's difficult to distinguish the two, even under a microscope.

The conversation led to another interesting fact: Humans have "invisible markings" on their bodies that only become visible when affected by certain diseases.

4. Leo Fender, inventor of the Telecaster and Stratocaster, couldn't play guitar.

Fender Electric Instrument Manufacturing made the first mass-produced electric guitar in 1950, but the inventor of the Telecaster didn't actually know how to play it.

Leo Fender was an engineer by trade, whose early career was focused on radio repair and amplification systems.

Reddit users discussed a dubious source of this claim, but Fender's own website confirms that "Ironically, the shy, somewhat introverted inventor wasn’t a guitar player."

9. The White House makes beer.

NPR interviewed Michelle Obama about gardening, but Reddit users were more interested in the mention of the White House's home-brewed beer.

White House Honey Ale is the first homemade beer to have been made in the White House. As one commenter mentioned, there are now two additional styles being brewed: White House Honey Blonde Ale and White House Honey Porter.

10. Early Christians were called atheists by the Roman Empire.

Though they obviously worshiped a deity, Christians living in the Roman Empire during the first and second centuries A.D. were referred to as "atheists" because they did not pay tribute to the pagan gods of the Roman pantheon.

In fact, as Redditor outisemoigonoma points out, Roman religiosity was far more pragmatic than today's absolutist dogma. The user cites research on Athenagoras' apology, a defense of Christians addressed to Emperor Marcus Aurelius.

"In order to remain favourable to the Gods, the Romans merely had to perform religious practice correctly, regardless of any personal conviction. The people were free to hold any belief, on one condition. Nothing was demanded of new faiths except an occasional gesture of adoration to the gods and the head of state. An atheist was 'someone who did not observe the traditional practice.' "

15. Space Internet is about as fast as DSL.

The astronauts on the International Space Station got direct access to the Internet in 2010 (previously, communications like tweets were relayed through mission control). They connect through a satellite relay on the Ku band of the electromagnetic spectrum.

18. Why pigeons live in the city.

A funny photo of pigeons at McDonald's garnered some insight from Reddit user Unidan, a Biology graduate student. Pigeons, most specifically "Rock Doves," derive from sea-cliffs, but over time have substituted their natural habitat for the ledges of buildings.

The birds have also traded their usual food for human garbage, and ingest pieces of gravel to help digest it.

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